Oculus rift:Head pos varies on different PCs

Cracking my head and searching highh and low for this solution.

Game is designed on PC 1, compiles and runs fine, position, tracking, all good.

Export the exe, to PC 2
the head position is off arbitrarily. Devised a pesky workaround requiring players to 'edit' his pos x y z for each session.

Question : how do i ensure pos is transferable regardless of the rift setup on the other PC?